Thigh exerciser



FIG. 1 is a front elevational view of a thigh exerciser showing my new design, the rear elevational view being a mirror image thereof;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a thigh exerciser, as shown and described. 